/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: #ffffff;
  background: #1a4a1a;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }

/* ===== Colors - 森林绿/红/粉/金/白/蓝 ===== */
:root {
  --bg-dark: #1a4a1a;
  --bg-card: #1e5220;
  --bg-section: #0f3a10;
  --red: #c41e3a;
  --red-dim: #8b1528;
  --pink: #ff8fa8;
  --pink-dim: #d4677e;
  --gold: #ffd700;
  --gold-dim: #b8960f;
  --green-deep: #0a2f0a;
  --green-mid: #2d6b2d;
  --green-light: #3d8b3d;
  --blue: #2196F3;
  --blue-hover: #42a5f5;
  --text: #ffffff;
  --text-dim: #cccccc;
  --text-muted: #999999;
  --border: #c41e3a;
}

/* ===== Navbar ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 16px 0;
  background: rgba(26, 74, 26, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--red);
  transition: all 0.3s ease;
}
.navbar.scrolled { padding: 10px 0; background: rgba(26, 74, 26, 0.95); }
.nav-container { max-width: 1140px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { display: flex; align-items: center; gap: 8px; }
.nav-logo-img { width: 36px; height: 36px; border-radius: 4px; border: 1px solid var(--red-dim); }
.logo-text { font-size: 20px; font-weight: 700; color: var(--red); letter-spacing: 2px; }
.logo-sub { font-size: 13px; color: var(--gold); letter-spacing: 1px; }
.nav-links { display: flex; gap: 32px; list-style: none; }
.nav-links a { font-size: 14px; color: var(--text-dim); transition: color 0.2s; letter-spacing: 1px; }
.nav-links a:hover { color: var(--gold); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--red); transition: all 0.3s; }

/* ===== Hero ===== */
.hero {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(45, 107, 45, 0.5) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 80%, rgba(196, 30, 58, 0.08) 0%, transparent 50%),
    var(--bg-dark);
}
.hero-bg::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(196,30,58,0.03) 1px, transparent 1px),
    radial-gradient(circle at 80% 30%, rgba(255,215,0,0.02) 1px, transparent 1px);
  background-size: 60px 60px, 90px 90px;
}
.hero-content { position: relative; text-align: center; padding: 120px 24px 80px; max-width: 800px; }
.hero-logo-wrap { margin-bottom: 32px; }
.hero-logo { width: 160px; height: 160px; margin: 0 auto; border-radius: 12px; border: 2px solid var(--red); object-fit: cover; }
.hero-badge {
  display: inline-block; padding: 6px 20px;
  border: 1px solid var(--red-dim); border-radius: 20px;
  font-size: 13px; color: var(--red); letter-spacing: 4px;
  margin-bottom: 32px;
}
.hero-title { margin-bottom: 24px; }
.title-line {
  display: block; font-size: clamp(36px, 7vw, 64px);
  font-weight: 800; color: var(--red);
  letter-spacing: 6px; line-height: 1.2;
  text-shadow: 0 0 40px rgba(196,30,58,0.2);
}
.title-line-sm {
  display: block; font-size: clamp(16px, 3vw, 24px);
  font-weight: 300; color: var(--pink);
  letter-spacing: 10px; margin-top: 8px;
}

/* ===== 动态旋转文字 ===== */
.rotate-char {
  display: inline-block;
  animation: charRotate 3s ease-in-out infinite;
  animation-delay: calc(var(--i, 0) * 0.15s);
}
@keyframes charRotate {
  0% { transform: rotateY(0deg); opacity: 1; }
  25% { transform: rotateY(90deg); opacity: 0.6; }
  50% { transform: rotateY(180deg); opacity: 0.4; }
  75% { transform: rotateY(270deg); opacity: 0.6; }
  100% { transform: rotateY(360deg); opacity: 1; }
}

.hero-desc {
  font-size: 16px; color: var(--text-dim); line-height: 1.9;
  max-width: 650px; margin: 0 auto 36px;
}
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 56px; }

/* ===== Buttons - 蓝色 ===== */
.btn {
  display: inline-block; padding: 12px 32px;
  font-size: 14px; font-weight: 600; letter-spacing: 2px;
  border-radius: 4px; transition: all 0.3s ease; cursor: pointer;
}
.btn-primary {
  background: var(--blue); color: #ffffff; border: none;
}
.btn-primary:hover { background: var(--blue-hover); box-shadow: 0 4px 20px rgba(33,150,243,0.4); }
.btn-outline {
  background: transparent; color: var(--gold); border: 1px solid var(--gold-dim);
}
.btn-outline:hover { background: rgba(255,215,0,0.1); border-color: var(--gold); }

/* ===== Hero Stats ===== */
.hero-stats {
  display: flex; gap: 48px; justify-content: center; flex-wrap: wrap;
}
.stat-item { text-align: center; }
.stat-num { display: block; font-size: 28px; font-weight: 700; color: var(--gold); letter-spacing: 2px; }
.stat-label { font-size: 13px; color: var(--pink); letter-spacing: 1px; }

/* ===== Sections ===== */
.section { padding: 100px 0; }
.section-dark { background: var(--bg-section); }
.section-header { text-align: center; margin-bottom: 60px; }
.section-tag {
  display: inline-block; font-size: 12px; color: var(--red-dim);
  letter-spacing: 4px; margin-bottom: 16px;
}
.section-title {
  font-size: clamp(28px, 5vw, 40px); font-weight: 700;
  color: var(--red); letter-spacing: 4px;
}
.section-line {
  width: 40px; height: 2px; background: var(--red);
  margin: 20px auto 0;
}
.section-desc { font-size: 15px; color: var(--pink); margin-top: 16px; }

/* ===== About ===== */
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
}
.about-card {
  background: var(--bg-card); border: 1px solid var(--red-dim);
  border-radius: 8px; padding: 32px;
  transition: all 0.3s ease;
}
.about-card:hover { border-color: var(--red); transform: translateY(-2px); }
.about-card-main { grid-column: 1 / -1; }
.about-card-main h3 { font-size: 22px; color: var(--red); margin-bottom: 16px; letter-spacing: 2px; }
.about-card-main p { color: var(--text-dim); margin-bottom: 12px; }
.about-icon { font-size: 28px; margin-bottom: 12px; }
.about-card h4 { font-size: 16px; color: var(--gold); margin-bottom: 8px; letter-spacing: 1px; }
.about-card p { font-size: 14px; color: var(--text-dim); }

/* ===== System ===== */
.system-block {
  background: var(--bg-card); border: 1px solid var(--red-dim);
  border-radius: 12px; padding: 48px 40px;
  margin-bottom: 32px; position: relative; overflow: hidden;
}
.system-block::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 3px; background: linear-gradient(90deg, var(--red), var(--gold), var(--red));
}
.system-badge {
  display: inline-block; padding: 4px 14px;
  background: rgba(196,30,58,0.15); border: 1px solid var(--red-dim);
  border-radius: 4px; font-size: 12px; color: var(--red);
  letter-spacing: 2px; margin-bottom: 16px;
}
.system-name { font-size: 24px; color: var(--red); letter-spacing: 3px; margin-bottom: 12px; }
.system-intro { font-size: 15px; color: var(--pink); margin-bottom: 28px; }
.system-details {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.detail-card {
  background: rgba(26,74,26,0.6); border: 1px solid var(--red-dim);
  border-radius: 6px; padding: 20px;
}
.detail-card-wide { grid-column: 1 / -1; }
.detail-label { font-size: 12px; color: var(--gold-dim); letter-spacing: 2px; margin-bottom: 8px; }
.detail-value { font-size: 14px; color: var(--text); line-height: 1.8; }
.char-grid { display: flex; gap: 12px; flex-wrap: wrap; }
.char-grid span {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px;
  background: rgba(196,30,58,0.15); border: 1px solid var(--red-dim);
  border-radius: 6px; font-size: 20px; color: var(--gold); font-weight: 600;
}
.num-grid { display: flex; gap: 10px; flex-wrap: wrap; }
.num-grid span {
  display: inline-flex; align-items: center; justify-content: center;
  width: 52px; height: 44px;
  background: rgba(26,74,26,0.4); border: 1px solid var(--green-mid);
  border-radius: 6px; font-size: 16px; color: var(--text); font-weight: 500;
}
.clock-note {
  margin-top: 20px; font-size: 13px; color: var(--pink-dim);
  text-align: center; letter-spacing: 1px;
}

/* ===== Features ===== */
.feature-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.feature-card {
  background: var(--bg-card); border: 1px solid var(--red-dim);
  border-radius: 8px; padding: 32px;
  transition: all 0.3s ease; position: relative;
}
.feature-card:hover { border-color: var(--red); transform: translateY(-3px); }
.feature-num {
  font-size: 42px; font-weight: 800; color: rgba(196,30,58,0.1);
  position: absolute; top: 16px; right: 20px; letter-spacing: 2px;
}
.feature-card h4 {
  font-size: 17px; color: var(--gold); margin-bottom: 12px;
  letter-spacing: 2px; position: relative;
}
.feature-card p { font-size: 14px; color: var(--text-dim); line-height: 1.8; }

/* ===== Culture ===== */
.culture-content { max-width: 800px; margin: 0 auto; }
.culture-quote {
  text-align: center; padding: 48px 32px;
  background: var(--bg-card); border: 1px solid var(--red-dim);
  border-radius: 12px; margin-bottom: 48px; position: relative;
}
.quote-mark {
  font-size: 80px; color: var(--red); opacity: 0.2;
  position: absolute; top: -10px; left: 32px;
  font-family: Georgia, serif; line-height: 1;
}
.culture-quote p {
  font-size: 18px; color: var(--text); letter-spacing: 3px;
  line-height: 2.2; position: relative;
}
.culture-pillars {
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
}
.pillar {
  background: var(--bg-card); border: 1px solid var(--red-dim);
  border-radius: 8px; padding: 28px; text-align: center;
  transition: all 0.3s ease;
}
.pillar:hover { border-color: var(--gold); }
.pillar-icon {
  font-size: 20px; color: var(--gold); font-weight: 700;
  letter-spacing: 4px; margin-bottom: 12px;
}
.pillar p { font-size: 14px; color: var(--text-dim); line-height: 1.7; }

/* ===== Contact ===== */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 32px;
}
.contact-info { display: flex; flex-direction: column; gap: 24px; }
.contact-item { }
.contact-label { font-size: 12px; color: var(--gold-dim); letter-spacing: 2px; margin-bottom: 6px; }
.contact-value { font-size: 16px; color: var(--text); }
.contact-cta {
  background: var(--bg-card); border: 1px solid var(--red-dim);
  border-radius: 12px; padding: 40px; text-align: center;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.contact-cta h3 { font-size: 22px; color: var(--red); letter-spacing: 3px; margin-bottom: 12px; }
.contact-cta p { font-size: 14px; color: var(--text-dim); margin-bottom: 24px; }
.cta-links { display: flex; gap: 12px; }

/* ===== Footer ===== */
.footer {
  padding: 48px 0 24px;
  border-top: 2px solid var(--red-dim);
  background: var(--bg-dark);
}
.footer-content {
  display: flex; justify-content: space-between; align-items: center;
  padding-bottom: 24px; border-bottom: 1px solid var(--red-dim);
}
.footer-logo { font-size: 18px; font-weight: 700; color: var(--red); letter-spacing: 3px; }
.footer-brand p { font-size: 13px; color: var(--text-muted); margin-top: 4px; }
.footer-links { display: flex; gap: 24px; }
.footer-links a { font-size: 13px; color: var(--text-dim); transition: color 0.2s; }
.footer-links a:hover { color: var(--gold); }
.footer-bottom { padding-top: 20px; text-align: center; }
.footer-bottom p { font-size: 12px; color: var(--text-muted); }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .nav-links {
    display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(26,74,26,0.98); flex-direction: column;
    align-items: center; justify-content: center; gap: 28px;
  }
  .nav-links.active { display: flex; }
  .nav-links a { font-size: 18px; }
  .nav-toggle { display: flex; }
  .about-grid { grid-template-columns: 1fr; }
  .system-details { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .culture-pillars { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 24px; }
  .hero-content { padding: 100px 16px 60px; }
  .system-block { padding: 32px 20px; }
  .hero-logo { width: 120px; height: 120px; }
}